J/PAZh/41/303 Long-term monitoring of SZ Cam (Gorda+, 2015) ================================================================================ Results of long-term monitoring of the multiple system SZ Cam. Gorda S.Yu. =2015PAZh...41..303G =2015AstL...41..276G ================================================================================ ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI Keywords: close binaries - eclipsing variable stars - photometric methods - spectrophotometry Abstract: We present the results of the reduction of our photometric and spectroscopic observations for the eclipsing binary SZ Cam performed with the telescopes at the Astronomical Observatory of the Ural Federal University and the Special Astrophysical Observatory of the Russian Academy of Sciences in 1996-2014. Based on an 11-year-long photometric monitoring of SZ Cam, we have obtained new elements of its photometric orbit and parameters of its components. We have detected low-amplitude periodic light variations in SZ Cam that are possibly related to the ellipsoidal shape of the components of the spectroscopic binary third body. Description: Photometric observations of SZ Cam were performed from 1996 to 2013 with the AZT-3 reflecting telescope (D=0.45m, F_cass_=10m) at the Astronomical Observatory of the Ural Federal University using a single-channel photoelectric photometer equipped with an image scanning unit (1996-2007) and an Apogee U6 CCD camera equipped with a KAF-1001 CCD chip (1024x1024, 24um) and mounted at the Newtonian focus (F_new_=2.0m) of the same telescope (2011-2013). Objects: ------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------- 04 07 49.29 +62 19 58.6 SZ Cam = HD 25638 ------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file uband.dat 29 1397 Photometrical dates in U-filter bband.dat 29 1395 Photometrical dates in B-filter vband.dat 29 1390 Photometrical dates in B-filter rband.dat 29 1374 Photometrical dates in R-filter -------------------------------------------------------------------------------- See also: J/AN/325/424 : SV Cam VB differential photometry (Patkos+, 2004) J/A+A/539/A139 : BVIc light curves of SZ Cam (Tamajo+, 2012) Byte-by-byte Description of file: bband.dat rband.dat uband.dat vband.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 13 F13.5 d HJD Heliocentric Julian Date 15- 20 F6.4 --- Phase [0/1] Cyclic phase 22- 27 F6.3 mag dmag [-0.1/0.4] Difference of magnitudes in Band between variable and comparison stars 29 A1 --- Band [UBVR] Observed band -------------------------------------------------------------------------------- Acknowledgements: Stanislav Gorda, Stanislav.Gorda(at)urfu.ru ================================================================================ (End) Patricia Vannier [CDS] 19-Jun-2015